Respiratory treatment device



FIG. 1 is a perspective view of a respiratory treatment device showing the new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The broken lines in the drawings illustrate portions of the respiratory treatment device that form no part of the claimed design. 

CLAIM The ornamental design for a respiratory treatment device, as shown and described. 